33 Best Free Financial Calculators

How much do you need to retire? Input your age, savings, and spending to find out. Spoiler: it's more than you think and less than the financial industry claims.

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Calculate your Financial Independence / Retire Early date with 5 FIRE variants: Lean, Regular, Fat, Barista, and Coast. Visual timeline included.

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Find out if you already have enough invested that compound interest will get you to retirement — even if you stop contributing today.

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Model your 401(k) growth with employer match, contribution limits, and projected returns. See how much the match is actually worth over 30 years.

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Should you convert your traditional IRA to Roth? Compare tax implications now vs. later. The answer depends on your current vs. future tax bracket.

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Estimate your Social Security benefits based on claiming age. Taking it at 62 vs. 70 can mean a 76% difference in monthly payments. Run the numbers.

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Einstein (maybe) called it the eighth wonder of the world. See how your money grows with daily, monthly, or annual compounding. The earlier you start, the more obscene the numbers get.

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Enter any stock ticker and date range to see your hypothetical return. Includes dividends. Great for both celebrating and regretting past decisions.

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Calculate total returns with contributions, withdrawals, and variable rates. More flexible than a simple compound interest calculator.

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Compare lump-sum investing vs. DCA (investing a fixed amount regularly). Historically, lump sum wins about 67% of the time — but DCA lets you sleep at night.

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Project your dividend income over time. See how reinvesting dividends creates a snowball effect. Enter yield, growth rate, and investment amount.

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A 1% fee doesn't sound like much until you see what it costs over 30 years. This calculator will make you angry at your financial advisor.

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If you'd invested $X in the S&P 500 on any date, what would it be worth today? Includes dividends and inflation adjustment. Prepare to feel regret.

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Model options strategies with profit/loss graphs. Calls, puts, spreads, and multi-leg strategies. For when you want to gamble but in a mathematical way.

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Compare your portfolio returns against the S&P 500, bonds, and other benchmarks. Most active managers underperform. Are you one of them?

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Break down your spending into categories and see where your money goes. Most people are surprised by food and subscriptions. You will be too.

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Estimate your take-home pay after federal and state taxes, FICA, and deductions. The gap between gross and net is always depressing.

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Your savings rate is the single best predictor of when you'll reach financial independence. Calculate yours and see how it compares to the average American (spoiler: 4.6%).

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Want to save $50,000 for a down payment? Enter your goal, timeline, and current savings. We'll tell you how much per month. You'll tell us that's too much.

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How many months of expenses should you have saved? Input your fixed costs and income stability. The traditional answer is 3-6 months. The real answer depends on your job security and anxiety levels.

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When will you become a millionaire? (Or: how much harder do you need to work to become one before you're too old to enjoy it?) Enter your savings and find out.

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See when you'll be debt-free based on your current payments. Then see what happens if you add $100/month. The interest savings might motivate you. Might.

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Compare the snowball method (smallest balance first) vs. avalanche method (highest interest first). Avalanche saves more money. Snowball gives more dopamine. Choose your fighter.

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See your marginal vs. effective tax rate. Most people confuse these. Your marginal rate is not what you pay on all your income — it's what you pay on the last dollar. This matters.

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Calculate taxes on stock sales, real estate, and other investments. Short-term vs. long-term makes a massive difference. Holding for 366 days can save you thousands.

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Monthly payments, total interest, and amortization schedules. The total interest on a 30-year mortgage will make you question everything about the American Dream.

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Is it cheaper to rent or buy in your area? Factors in opportunity cost of the down payment, maintenance, property tax, appreciation, and tax benefits. The answer is more nuanced than your parents think.

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Convert your salary to hourly rate. Then factor in commute time and unpaid overtime. Your real hourly rate is always lower than you think.

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Is your side hustle actually profitable after expenses, taxes, and the time you're spending? Calculate your true hourly rate. Some side hustles pay less than minimum wage.

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What $100 in 2000 buys today. Or: why your parents' first house cost $40,000 and that doesn't mean they were smarter than you.

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Assets minus liabilities. That's it. But tracking this number over time is the single most motivating thing you can do for your finances.

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See where your net worth ranks among all Americans by age group. Prepare for either smugness or existential dread, depending on the result.

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How does your net worth compare to what it 'should' be based on your age and salary? The formula is simple. The results are usually humbling.

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